Reasons for Identical and Fraternal Twins

 

Types of Twins in Hindi

Video taken from the channel: Sandip’s Biology


 

Formation of Twins

Video taken from the channel: Claudia Chen


 

Fertilization and Implantation, Identical twins and Fraternal twins

Video taken from the channel: MedKes TF IND Medical and Health


 

Identical Twin Formation-First time ever witnessed The Cleavage of a Blastocyst

Video taken from the channel: Rasverix Xyleighraq


 

In the Womb Identical Twins

Video taken from the channel: Naked Science


 

Learning about Multiple Pregnancy

Video taken from the channel: All Health TV


 

Differences between identical twins and fraternal twins. Multiple pregnancy

Video taken from the channel: Instituto Bernabeu


The other name for fraternal twins is dizygotic twins, meaning two fertilized eggs. They’re the result of the mother releasing two eggs at the same time with each egg being fertilized by a. Mirror twins always come from a single fertilized egg and share the same genetic makeup.

That said, the exact cause of the mirroring in some twin pairs is. History of twins: Once you have a set of fraternal twins, you’re twice as likely to have another set in future pregnancies. Number of pregnancies: The more pregnancies you’ve had, the greater your chances of having twins. Race: Twins are more common than average among white and African American people and less common amon Hispanic and Asian people. Identical twins are the same sex as each other and look very alike.

Nonidentical, or fraternal, twins: This type of pregnancy occurs when there are two eggs present in the womb at the time of. Because fraternal, or dizygotic, twins are 2 separate fertilized eggs, they usually develop 2 separate amniotic sacs, placentas, and supporting structures. Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2. A pair of a twin can either be monozygotic or dizygotic.

In the monozygotic twin, they are identical as they develop from one zygote. Whereas, in dizygotic, the twins split and form two embryos and are ‘non-identical’ or called ‘fraternal.’ It means that each twin develops from a separate egg, with each egg being fertilized by its sperm cell. 6. Advancing maternal age. Women who are aged in their 30’s and 40’s have significantly higher chances of conceiving with twins.

Younger women, especially those aged in their 20’s, do not have as much chance. Having assisted reproductive technology, in particular taking medication which increases ovulation. Most of the time, the cause of MZ twinning is unknown. Dizygotic (DZ) twins, also called fraternal twins, occur when two egg cells are each fertilized by a different sperm cell in the same menstrual cycle.

DZ twins are about twice as common as MZ. To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information. To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.

Non biological twins.

List of related literature:

Either a single fertilized egg divides to form two genetically matching organisms, which then become identical twins, or two eggs are released approximately simultaneously, and a different sperm fertilizes each, resulting in fraternal twins.

“Social Work Perspectives on Human Behavior” by Margarete Parrish
from Social Work Perspectives on Human Behavior
by Margarete Parrish
McGraw-Hill Education, 2014

Identical twins have identical genes, so they should also have the same susceptibility to hereditary diseases; whereas fraternal twins (which originate from two separate, fertilized eggs) have no greater similarity in their heredity than brothers or sisters born at different times.

“Foods & Nutrition Encyclopedia, Two Volume Set” by Marion Eugene Ensminger, Audrey H. Ensminger
from Foods & Nutrition Encyclopedia, Two Volume Set
by Marion Eugene Ensminger, Audrey H. Ensminger
Taylor & Francis, 1993

It is sometimes difficult to determine by ultrasound or at birth whether twins are identical or fraternal because the two fraternal placentas may fuse and appear as one large placenta.

“Maternal & Child Health Nursing: Care of the Childbearing & Childrearing Family” by Adele Pillitteri
from Maternal & Child Health Nursing: Care of the Childbearing & Childrearing Family
by Adele Pillitteri
Wolters Kluwer Health/Lippincott Williams & Wilkins, 2010

Recent studies in humans of identical (monozygotic) and fraternal (dizygotic) twins have shown that the effect of sharing the same placental milieu adds to that of sharing the same genes (Kaminsky et al., 2009).

“What Darwin Got Wrong” by Jerry Fodor, Massimo Piattelli-Palmarini
from What Darwin Got Wrong
by Jerry Fodor, Massimo Piattelli-Palmarini
Profile, 2011

Early research focused on 15 pairs of identical twins (monozygous; same heredity from a single fertilized ovum) and 15 pairs of fraternal twins (dizygous; like ordinary siblings, derived from two separate fertilized ovum) raised in the same city and with parents of similar socioeconomic backgrounds.

“Exercise Physiology: Nutrition, Energy, and Human Performance” by William D. McArdle, Frank I. Katch, Victor L. Katch
from Exercise Physiology: Nutrition, Energy, and Human Performance
by William D. McArdle, Frank I. Katch, Victor L. Katch
Lippincott Williams & Wilkins, 2010

When genetic influences are entirely additive, the similarity of identical twins (raised apart) is about twice that of fraternal twins (raised apart), because identical twins have twice as many genes in common as do fraternal twins.

“Individual Differences and Personality” by Michael C. Ashton
from Individual Differences and Personality
by Michael C. Ashton
Elsevier Science, 2013

Fraternal twins resulting from eggs that are fertilized at the same time but that are not identical.

“Comprehensive Dictionary of Education” by Maqbool Ahmad
from Comprehensive Dictionary of Education
by Maqbool Ahmad
Atlantic Publishers & Distributors (P) Limited, 2008

Causes: Monozygotic twins result from the cleavage of a single fertilized ova (4/1000 births).

“Netter's Obstetrics and Gynecology E-Book” by Roger P. Smith
from Netter’s Obstetrics and Gynecology E-Book
by Roger P. Smith
Elsevier Health Sciences, 2008

The tendency for fraternal, but not identical, multiple births seems to be hereditary.

“Memmler's Structure & Function of the Human Body, Enhanced Edition” by Barbara Janson Cohen, Kerry L. Hull
from Memmler’s Structure & Function of the Human Body, Enhanced Edition
by Barbara Janson Cohen, Kerry L. Hull
JONES & BARTLETT PUB Incorporated, 2020

Because these twins habitually are fraternal (two separate eggs fertilized by separate sperm), it is a possibility that twin offspring of the opposite sex share the same placenta.

“Primate Anatomy: An Introduction” by Friderun Ankel-Simons
from Primate Anatomy: An Introduction
by Friderun Ankel-Simons
Elsevier Science, 2010

Oktay Kutluk

Kutluk Oktay, MD, FACOG is one of the world's foremost experts in fertility preservation as well as ovarian stimulation and in vitro fertilization for infertility treatments. He developed and performed the world's first ovarian transplantation procedures as well as pioneered new ovarian stimulation protocols for embryo and oocyte freezing for breast and endometrial cancer patients.

Mail: [email protected]
Telephone: +1 (877) 492-3666

Biography: https://medicine.yale.edu/profile/kutluk_oktay/
Bibliography: oktay_bibliography

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63 comments

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  • Twins are siblings NOT meant for marriage. Therefore the idea of twin relationships is flawed. Friends yes, relationship = BIG no.

  • I’m a quadruplet
    Ok so all 4 of us started as 3 different eggs so we were supposed to be fraternal triplets but my egg decided to split and now were quadruplets and I have a identical twin sister
    Fun right
    Probably not for my mom

  • I think that being gay or straight is about personality, like you liking yellow or pink more. You can’t choose to like yellow over pink, it’s something that just happens and comes with your personality, which is both genetic and environmentally formed. So yeah, I think it’s both. Some twins share some personality traits like both being shy, being good singers, liking sports. while some they don’t. With sexuality attraction, I think it’s the same. Both genetic and environmental. I have two gay uncles and my dad is the only straight one. All raised in the same environments. We are all different, even identical twins.

  • I’m only watching this cause I’m a twin and I wanna learn more �� but I’m a girl and my twin is a boy (but we’re not identical we’re fraternal twins) and tbh I’m kinda glad im twin cause All my friends are always saying I’m lucky to be a twin ❤️ me and my twin brother do everything together and go almost everywhere together. And me and him always had the same classes for school untill this year…..�� me and him now have all separate classes and it’s kinda weird for me now:(

  • I have an identical twin sister. We were born in 1965 at 7 months and are 2 minutes apart. We weighed 3 pounds and something ounces. We looked identical growing up, but once she had children our characteristics changed. We are 5’4 and I weigh 122 pounds and she weighs 170.

  • 2:56 So the only answer to why this happens is because of the weakening of the junction between the cell and the trophoblast membrane, which causes the cell to repair and split in two to form a new identical cell…I’m thinking about how skin cells repair themselves. Well I’m not a specialist so I might be wrong but that’s just my hypothesis. I took biology in 10th grade ��

  • Wow, this video is so detailed. Shows exactly how the blastocyst are formed. Am actually taken aback by the graphics. Many couples trying to conceive hope to have twins. Their reasons vary. From ensuring that their child has a close sibling through childhood to simply wanting a large family. While multiple births occur in about 3 percent of all pregnancies in the United States each year. Experts say there are some steps women can take to increase their chances of having twins. Diet, ethnicity, genetics and lifestyle all play a role in whether a woman is more apt to have twins. I can also add artificial means. That is like IVF. I have some friends who went through IVF in Bio tex clinic. And the amazing part is that more than half are mothers to twins. However, there are other methods of conceiving twins than IVF. Both natural and artificial.

  • I have and abdominal pregnancy that have not been proven and I can’t wait to get this baby out of me so that I can start having another baby with the love of my life my boyfriend he’s so special to me he’s loving and kind and so much more plus we both want a big family and we will in Jesus name amen

  • Hi.. �� this is Irwan and Erwin, and we are Twins, I’m Erwin the youngest. And I’m so blessed that I have Irwan as the older Twins brother.

  • I ordered from Dr Odin Herbal Home. Please I sincerely want everyone to try this herbal medicine because it has given me back my life. My test results were received and it came back negative after having this virus herpes for several years. Let’s resend it to save the world and get everyone out of the pharmacy cage. You can contact Dr Odin at [email protected] gmail.com or whatsap +2348139424847

  • I have fraternal twins one boy and one girl they are different and their tastes are also different now they are 7 years healthy by god’s grace but one problem occurred in my son as we found he has less vision and need to wear specs after few months we found that my girl is Also having less vision I am really worried ��

  • I’m an identical twin and my sister and Myself are completely different. She’s a bully and religious control freak. She is manipulative and married a bully. She has had a major negative detrimental impact on my life. I still love her but she has GREAT DELIGHT in bringing me down?We were so close as youngsters. Heart breaking. ��

  • If sexuality turns out to really be genetic and confirmed before birth, that would debunk the common claim that gay people “choose to be gay.”

  • Sexual orientation is not genetically marked… I am a heterosexual male, happily married to my soulmate and we’ve been blessed with two beautiful rowdy sons and one lovely little princess…

    My identical brother is gay… even he says it’s a decision issue, not genetic or how he was raised… he was bi-curious at 14 and decided to bat for the other side once he got the taste of that lifestyle… nonetheless, he will always be my brother who will always be a major part of my life…

  • Me and my brother are the only surviving twins in our whole family history, for some reason every other pair of twins in my family circle die either after birth or before birth so I’m scared because what if our deaths are just delayed

  • My identical boys implanted differently in the same placenta… it so funny because the bigger twin, who had better rooting (blood supply)!still has a crazy appetite vs his brother!

  • I’m 18 weeks pregnant with non identical twins I’m so blessed �� my mother had non identical twins 28/9)1994 boy girl my due date is 28/9/2019 2boys to me this is a miracle ����

  • I have a twin sister and we are always together and we buy the same clothes and i love her so much (its like i have 2 souls.. shes my second soul) i thank god so much because i feel lucky to have her ❤❤

  • I have a question for everyone.

    Which would you rather have: an identical twin or an fraternal twin?

    I would rather have an identical twin, since fraternal twins are pretty much just regular siblings that are just born about the same time.

  • I am asking God whenever my time is come to have children I’m begging him to give me two identical twin daughter and ask him please let their born with good health

  • Those nannies in the womb are alive from conception! How can anyone abort them saying otherwise! They feel the pain when ripped from the mother’s womb!!!

  • The best video i have seen explaining why being gay is not a life style choice and is decide before birth in the womb -similarly why some people are left handed and some right handed

  • It must be great to have a twin, having a very unique bond with someone that’s another you. You’ll always have a “partner in crime” too.

  • I have one question.Is it possible for the 2 first formed cells of zygote to develop into 4 cells by dividing mitotically at the same moment and at the same second?

    Can anyone answer this.please help with legitimate answer

  • By the way, sperm are NOT motile until they are capacitated within the uterus. This step was essential to discover in order to enable the development of In Vitro Fertilization

  • The fetuses pictures they are showing are of fraternal twins not of identical twin… identical twin are in one sac sharing one placenta

  • It is a mystery. God knows only why it splits. Some things can’t be explained just accepted. Science is fascinating. God is wonderful

  • Kabhi _2 ye bhi hota h ki dusare baby ko yk ghante Baad nikale ya 4 ghante Baad Aisa kyo hota h to pehla jo baby nikala h mar nhi jayega

  • When semi-identical twins are born, are there any diformity, health issues for one of the twins? Because I remember reading years ago that when there is identical twins of different sex, usually the girl twin is sterile and had health issues!

  • I’m gonna go ahead and clear this up for all the people being pissy in the comments.

    When he says mistake, he does not mean the resulting two people are a mistake. What he means is that the cell makes an error in dividing, resulting in two people. It’s true that nobody knows what causes this mistake to occur, but it is by definition a mistake. The literal definition of mistake is error, which is what happens during embryonic cell division to cause identical twins.

  • 32 yrs ago I was lucky enough to have a healthy set of twins. Birth weights were 7 lbs 3 ounces, 21″ long and 4 lbs 11 ounces, 18″ long.

  • i am weird because im here to watch this process of identical twins.,. but seriously noong una gusto ko may twin brother ako, kasi ngayon wala akong kapatid, kasi maagang namatay tatay ko., kaya ngayon ako lang at ang nanay ko., sana humati ako during cell process hahahaha

  • After struggling to conceive for 4 years (had 1 miscarriages in between) I was diagnosed with fibroid and block tubes, when I went for scan ealiy February 2015 the scan results show that the fibroid was very huge 8.12cm. after a friend of mine recommended me to this herbal specialist whom helped me out with his herbs. I went for Sean and I was told that the block tubes was confirmed opened and the fibroid was no longer there it was melted out by the herbs I was taking,i managed to conceive my first baby naturally, she is 3 years old by the grace of God I Will be holding my second miracle baby soon, God willing. I’m simply testifying over my breakthrough. What an how I did to conceive after years of struggling.? You can add him up on WhatsApp+2348146605237 or contact him at [email protected] gmail.com

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  • I am a mother of fraternal twin boys, they are 5yrs now as much as I recognise that it’s some kind of miracle and blessing but it’s a lot of work too. I honestly do not wish to have twins again.

  • So basically, when you nut in your women and the cell start to make a baby… Shake the Fuck out of your women in hoping this shit happens.

  • My twins are 7months now the journey is amazing on so many different levels and scary lol they are fraternal. I feel so blessed! Grateful ��

  • Hello everyone am hear to tell you about the great man that God use for me after 5years of no Child my home go sad Everyday but I thank for today I come across Dr ODIN who helped me with his wonderful herb, I have a my baby girl God bless my home for any one here that’s interested contact Dr Odin WhatsApp number +2348139424847 OR Email: [email protected] gmail.com

  • This video is so cool I am a identical twin myself my names Leah and my sisters is autumn we are always together and people always say to us that they wished they had a twin and that we are so lucky to have someone through everything it is such a blessing to have her I would give my life for her I would rather her succeed in life than me their is no greater love for a person than my twin we look just alike and play the same sports and couldnt imagine life without her..like if you are a twin or if you want one

  • Human creation in Quran

    وَلَقَدۡ خَلَقۡنَا ٱلۡإِنسَٰنَ مِن سُلَٰلَةٖ مِّن طِينٖ

    We have created man from an extract of clay.
    (Surah Al-Mu’minun, verse 12)

    ثُمَّ جَعَلۡنَٰهُ نُطۡفَةٗ فِي قَرَارٖ مَّكِينٖ

    Then We made him a sperm-drop in a firm resting place.
    (Surah Al-Mu’minun, verse 13)

    ثُمَّ خَلَقۡنَا ٱلنُّطۡفَةَ عَلَقَةٗ فَخَلَقۡنَا ٱلۡعَلَقَةَ مُضۡغَةٗ فَخَلَقۡنَا ٱلۡمُضۡغَةَ عِظَٰمٗا فَكَسَوۡنَا ٱلۡعِظَٰمَ لَحۡمٗا ثُمَّ أَنشَأۡنَٰهُ خَلۡقًا ءَاخَرَۚ فَتَبَارَكَ ٱللَّهُ أَحۡسَنُ ٱلۡخَٰلِقِينَ

    Then We turned the sperm-drop into a clot, then We turned the clot into a fetus-lump, then We turned the fetus-lump into bones and We clothed the bones with flesh; thereafter We developed it into another creature. So glorious is Allah, the Best of the creators.

    (Surah Al-Mu’minun, verse 14)
    Thanks

  • Ummmm Is a Quadruplets from Gangbangers I mean twins are normal and triplets but Quadruplets!!!??? No Way

    Edit:Just asking Don’t Be Mad

  • mudah mudahan ada rezki aku mengandung dapat twins.. sbb side husband got twin & sibling aku got twin also. in sha Allah amiin. (24052019)

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  • Thanks for making it I am a House school student and was so much confused in this topic but now I am not.
    Thank you Very much keep up the good work����������������������������������������������������������������������������

  • ۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔سپرمز کا علاج ۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔۔
    .. ایک مریض نے صفر سپرمز کے ساتھ رابطہ کیا مگر باقی فیلڈز میں زندگی تھی اس مریض کو سوش خصیہ اور سوزاکی زھر بھی تھا جسکا الحمداللہ علاج کیا گیا اس مریض کو ایک ماہ کی ادویات دی گئیں اور ایک ماہ بعد کی رپورٹس دیکھیں ہیں تو بہت خوشی ھوئی% 10 سپرم شو ھوئے اس کا علاج مکمل کیا جائیگا اور میں امید کرتا ہوں کہ مزید دو ماہ میں یہ بلکل کلئیر ہو جائیگا
    …. بقول مریض کے میری رپورٹس کچھ عرصہ سے بلکل ایسی آ رہی ہیں اور مختلف جگہ کے معالجات نے بھی رپورٹس میں فرق نہی ڈالا آج انہوں نے رپورٹس کروائی اور ساتھ خوش بھی ہیں ۔ علاج میں بہت سی وجوہات کو پرکھ کر آگے بڑھنا پڑتا ہے ،،، جس میں ٹائفائیڈ ،،، کن پیڑے ،،، سوزاکی زھر ،،، آتشکی زھر ،،، بواسیری زھر ،،، اور بہت سی وجوہات جنہیں دیکھ پرکھ کر علاج کیا جاتا ھے،،، ������ حکیم حیدر شاہ گیلانی گوھردواخانہ چشتیاں 03017512706 wattsap

  • The only time my mom cared about me https://www.google.com/search?q=baby+in+womb&safe=active&rlz=1C1CHBF_enUS905US905&sxsrf=ALeKk01vBVVdwf01jMXjdorGu9I0hI4ARA:1597891966193&tbm=isch&source=iu&ictx=1&fir=vUzmjBrR_hi-CM%252CaW1u4UtowIiNbM%252C_&vet=1&usg=AI4_-kSYF4ef0WLKzmeafhJNx_SnKMQuwQ&sa=X&ved=2ahUKEwjK26K446jrAhVLbKwKHcsuBnwQ9QEwC3oECAoQGg&biw=1920&bih=948#imgrc=vUzmjBrR_hi-CM

  • I just thought it was. So impossible to do a twin cause there’s only one egg cell I got pregnancy and sex thoughts kick into my observation or deep thinking time at lunch so I gathered what I can all remember why can it have twins maybe it had an error and. Made egg cells? And I got to confused and searched it thanks for explaining new subbe

  • Pray for me please friends meri 2 betian hn dua karen k Allah pak mjy 2 twins bety ata farmaye summ ameen kya pta ap ki ameen sy mera rabb meri faryad sunn ly������

  • i have been trying to get pregnant for over 5 years now. My husband and I
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  • Come on, who else was just hoping amongst hope that Tom’s identical brother should have been named Jerry. No? Must have just been me then.

  • My auntie had 3 sets if twins and 1 set of triplets (each set of twins are identical and so are the triplets) I remember meeting all her kids it was crazy

  • I have twin boys 8 months old and zero twins runs im my family but in runs in my husband family so i dont know im thinking the genes can run in either side lol

  • When you look at such a detailed documentary on the beginning days of human life, how can you not think abortion (or as it should be called, fetal execution by the mother) is evil?

  • We have history of triplets & twins (On my father side)

    My greatgrandmother had a triplets 2 boys & 1 girl but died after giving birth ( only 1 of boys has survived). Then my aunt has twin baby girl & boy they named them Mariel & Michael they are now 2 years old. Hope I’m having a twins too. Please…����

  • It is said that it was scientifically discovered that there is a third process: an ovule that divides in two before being fertilized “that results in semi identical twins (100% share the genes of the same ovum the mother and 75% the genes of the father because they can be fertilized by different sperms or by the same one that transports more than one gene “in a process known as polyspermia)
    The babies that come from this process are not identical or fraternal: the correct scientific name is semi identical twins!Share the same chorion and placenta, but they can have their own anmiotic bags separately or not!

  • What about when you have 2 sperms that fertilize the same egg(1 egg)
    Because I thought I have seen that situation before!
    Where 2 sperms will fertilize one egg, will they still be ferternal twins???

  • Thankuuu so much sir. Aaapkne bahut aacha explained Kiya b bikul. Ek baar Mai hi samj AA Gaya. ��������. Aaaage bhi aise wonderful vedios aaap banate raho. Sir. ����������‍♀️����‍♀️����

  • Sir muze DCDA twins Hai, par pahili sonography me sirf ek baby ki hi heartbeat aai, Kya Dusara ki heartbeat Baad me sunaui dene ke Koi chances Hai ya nahi, Abhi sonography ek machine Bada boli Hai. Plz reply. Aura dcda me dizygotic Hai ya nahi ye Kaise pata Chalega sir?

  • plezz mere liye bi duwa krdo pata nhi aap me se kis ki duwa kubul ho jay allha paak mujh bi twins baby boy dede plezz mere bhai or bhenno mere liye bi duwa kr jiye ga

  • Sir agar twins baby ho aur yk baby ko cord clamp karke nikal Liya Jaye to kya dusare baby ko turant nikalenge ya 3_4 minute rook Kar tab nikalenge

  • Hi! I am from Bangladesh. may 17 weeks ki pregnant hu with twins. Mari 2 day’s phale ultrasound huya or doctor ne bataya baby A (its a boy) and baby B bohot hilrahi thee issleya findout nahi huya.mari single placenta and single sac.so baby B ka gender keya ho sakhta ha?